Question

31. A well was dug with 14 m inner diameter
and was 8 m deep. The earth dug out of it
was evenly spread out on a rectangular plot
of size 10 mx 8 m. Find the raise in the
height of the plot.
(a) 15.6 m
(b) 15.4 m
(c) 15 m
(d) 15.5 m​

Answer 1

Answer:

15.4

Step-by-step explanation:

d=r/2=14/2=7

inner rad of well = 7m

vol of earth dug out of wel = vol of plot

$\pi\: {r}^{2} h = l \times b \times h$

$\frac{22}{7} \times 7 \times 7 \times 8 = 10 \times 8 \times h$

h=15.4

is your answer.